為何美國以色列此刻出手？伊朗進入「生存模式」，結局仍充滿變數
Базу США в Ираке атаковал беспилотник08:44
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For Stilfold, the advantage of doing this with metal is to strengthen that material without requiring lots of brackets, screws or supports – reducing the overall volume of material required, and therefore also the cost and embodied carbon emissions of any product made with the technique. "We can achieve about 20-30% material reduction just by adding stiffness," says Nyvang.
她们更清楚代价，也更明白自己在放弃什么。